PROPAGATION BEHAVIOR OF A FATIGUE CRACK OF HIGH STRENGTH Al ALLOY-Reference-Cited by-同舟云学术

PROPAGATION BEHAVIOR OF A FATIGUE CRACK OF HIGH STRENGTH Al ALLOY

Published:2012-01 Issue: Volume:06 Page:288-293
ISSN:2010-1945
Container-title:International Journal of Modern Physics: Conference Series
language:en
Short-container-title:Int. J. Mod. Phys. Conf. Ser.

Author:

MAEDA HIDEKI¹,KARIYA KOHJI²,KAWAGOISHI NORIO¹,NU YAN³,GOTO MASAHIRO⁴

Affiliation:

1. Department of Mechanical Engineering, Kagoshima University, Kagoshima, 890-0065, Japan

2. Department of Mechanical System Engineering, Dai-ichi University, Kirishima, 899-4395, Japan

3. Hubey Laboratory, China Three Gorges University, Yichang, China

4. Department of Mechanical Engineering, Oita University, Oita, 870-1197, Japan

Abstract

In order to investigate the effect of humidity change on growth behavior of a fatigue crack of an extruded and age-hardened Al alloy 7075-T6, rotating bending fatigue tests were carried out using plain specimens in relative humidity of 25% and 85%. In constant humidity, a crack propagated in a tensile mode macroscopically in low humidity and in a shear mode in high humidity. The crack growth rate was accelerated by high humidity. By changing humidity, the growth rate and the growth mode of a crack were changed to those corresponding to the changed humidity. That is, cumulative fatigue life in humidity change may be estimated by the fatigue life in constant humidity.

Publisher

World Scientific Pub Co Pte Lt

Link

https://www.worldscientific.com/doi/pdf/10.1142/S2010194512003327

Reference5 articles.

1. There is no infinite fatigue life in metallic materials

2. Effects of nonmetallic inclusions, small defects and small cracks on fatigue strength of metals.

3. Propagation of Shear Mode Crack in Age-Hardened and Extruded Al Alloy under Ultrasonic Loading

4. The role of hydrogen in corrosion fatigue of high purity Al-Zn-Mg exposed to water vapor